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ELEN [110]
3 years ago
10

Make a ten or a hundred to add mentally 361+177?

Mathematics
1 answer:
cricket20 [7]3 years ago
4 0
I’m pretty sure it would have to be 10 but not %100
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Find the value of b.
Nesterboy [21]

Answer: 230^{\circ

Step-by-step explanation:

For convenience, I labeled some points as shown in the attached picture.

Also, I assume \overline{AB} and \overline{BC} are tangents to the circle.

  1. \overline{BO} \cong \overline{BO} (reflexive property)
  2. \overline{AB} \cong \overline{BC} (tangents drawn from a common external point are congruent)
  3. \angle BAO \cong \angle BCO (right angles are congruent)

Therefore, we know \triangle ABO \cong \triangle CBO by HL.

Thus, by CPCTC,

\angle AOB \cong \angle BOC \implies m\angle BOC=65^{\circ}\\\\\implies m\angle AOC=130^{\circ}

This means the measure of minor arc AC is 130^{\circ}, and thus b=360^{\circ}-130^{\circ}=\boxed{230^{\circ}}

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Step-by-step explanation:


4 0
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What is the best measure of center for the following data set?
Rom4ik [11]

Answer:

b) median: there are 7 numbers listed; 20 is the middle number among them

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mean: add all the numbers together =129

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Step-by-step explanation:

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Anastaziya [24]

https://answers.yahoo.com/question/index?qid=20180411132938AApZYZz

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